FIX: Restore sample materials broken by URP upgrade, fix pink probuilder materials in rolling ball scene

[Pauliusd01]

Description

Some materials were broken after URP upgrade, dependency note was missing from readme and rolling ball scene had pink probuilder shaders for ages unrelated to the URP upgrade so might as well fix those. Note: the probuilder remnants still exist and this does not fix any of it just cleans up the ancient eyesore

Testing status & QA

Checked all scenes android and windows.

Overall Product Risks

Please rate the potential complexity and halo effect from low to high for the reviewers. Note down potential risks to specific Editor branches if any.

• Complexity: low
• Halo Effect: low

Comments to reviewers

N/A

Checklist

Before review:

• Changelog entry added.
  • Explains the change in Changed, Fixed, Added sections.
  • For API change contains an example snippet and/or migration example.
  • JIRA ticket linked, example (case %%). If it is a private issue, just add the case ID without a link.
  • Jira port for the next release set as "Resolved".
• Tests added/changed, if applicable.
  • Functional tests Area_CanDoX, Area_CanDoX_EvenIfYIsTheCase, Area_WhenIDoX_AndYHappens_ThisIsTheResult.
  • Performance tests.
  • Integration tests.
• Docs for new/changed API's.
  • Xmldoc cross references are set correctly.
  • Added explanation how the API works.
  • Usage code examples added.
  • The manual is updated, if needed.

During merge:

• Commit message for squash-merge is prefixed with one of the list:
  • NEW: ___.
  • FIX: ___.
  • DOCS: ___.
  • CHANGE: ___.
  • RELEASE: 1.1.0-preview.3.

[u-pr]

💡 Harness Review

Documentation-only change appears consistent with the sample projects' current shader dependencies; I didn't find a concrete issue worth flagging.

_{Reviewed commit af9f51a8}

_{🤖 Helpful? 👍/👎}

[codecov-github-com]

Codecov Report

All modified and coverable lines are covered by tests ✅

@@           Coverage Diff            @@
##           develop    #2451   +/-   ##
========================================
  Coverage    78.95%   78.95%           
========================================
  Files          767      767           
  Lines       140780   140780           
========================================
  Hits        111147   111147           
  Misses       29633    29633           

Flag	Coverage Δ
inputsystem_Ubuntu_6000.0	5.31% <ø> (ø)
inputsystem_Ubuntu_6000.0_project	77.40% <ø> (+<0.01%)	⬆️
inputsystem_Ubuntu_6000.3	5.31% <ø> (ø)
inputsystem_Ubuntu_6000.5	5.30% <ø> (ø)
inputsystem_Ubuntu_6000.6	5.30% <ø> (ø)
inputsystem_Ubuntu_6000.6_project	77.46% <ø> (ø)
inputsystem_Ubuntu_6000.7	5.30% <ø> (ø)
inputsystem_Windows_6000.0	5.31% <ø> (ø)

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